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package hlt.language.design.instructions;

/**
 * @version     Last modified on Wed Jun 20 14:29:51 2012 by hak
 * @author      <a href="mailto:hak@acm.org">Hassan A&iuml;t-Kaci</a>
 * @copyright   &copy; <a href="http://www.hassan-ait-kaci.net/">by the author</a>
 */

import hlt.language.design.backend.RealMap;
import hlt.language.design.backend.Runtime;
import hlt.language.design.backend.NullValueException;

public class GetIntIndexedRealMapSlot extends Instruction
{
  public GetIntIndexedRealMapSlot ()
    {
      setName("GET_INT_INDEXED_MAP_R");
    }

  public final void execute (Runtime r) throws NullValueException
    {
      RealMap map = (RealMap)r.popObject("can't access element of a null map");
      r.pushReal(map.get(r.popInt()));
      r.incIP();
    }
}